iTALC is a free classroom management software which enables teachers to view and control computers in their labs and interact with students. It supports Linux and Windows XP (Vista/7 soon) and it even can be used in mixed environments transparently.

SquirrelMail is a PHP-based Web email client. It includes built-in pure PHP support for IMAP and SMTP, and renders all pages in pure HTML 4.0 for maximum compatibility across browsers. It has strong MIME support and a flexible plugin system.

Areca-Backup is a file backup software that supports incremental, image and delta backup on local drives or FTP servers. Areca-Backup also allows you to browse your backups and navigate among different version of the files contained in your archives.

phpPgAdmin is a fully functional web-based administration utility for a PostgreSQL database server. It handles all the basic functionality as well as some advanced features such as triggers, views, and functions (stored procs)

BackupPC is a high-performance, enterprise-grade backup system for backing up Linux, WinXX PCs, Macs and laptops to a server's disk. Features include clever pooling of identical files, no client-side software, and a powerful Apache/CGI user interface.